| Business | Phone |
| Bob's Car Audio & Electronics 19040 Hawthorne Blvd, Torrance 90503 | (310) 370-1448 |
| Bob's Car Audio & Electronics 21213 Hawthorne Blvd # B5533, Torrance 90503 | (310) 224-1111 |
| Car Fidelity Inc 2920 Sepulveda Blvd, Torrance 90505 | (310) 539-4983 |
| Audio Matrix 1644 W Carson St # A, Torrance 90501 | (310) 782-0037 |
| Automation 16718 Ermanita Ave, Torrance 90504 | (310) 527-4391 |